THE PRESENT PROPOSAL IS TO DEVELOP A BASELINE GROUNDWATER SYSTEM OF NIGER FOR BETTER UNDERSTANDING OF GROUNDWATER AVAILABILITY AND ACCESSIBILITY WITH RECHARGE, WHICH WILL BE ESTIMATED FROM GRACE. NIGER HAS GREAT DEMANDS OF GROUNDWATER FOR MUNICIPAL USES AND IRRIGATION FOR SUSTAINABLE FOOD PRODUCTION. WHILE DECADAL EFFORTS OF GROUNDWATER DATA COLLECTION HAVE BEEN MADE IN THE PAST, THE DATA DISTRIBUTIONS ARE GEOGRAPHICALLY SCATTERED AND TEMPORALLY SPORADIC. THE DEPARTMENT OF HYDRAULICS IN NIGER PROVIDED THE TEAM OF MERCY CORPS AND NASA WITH IN-SITU GROUNDWATER DEPTH DATA IN FIVE REGIONS (AGADEZ, DIFFA, DOSSO, MARADI, AND ZINDER) COLLECTED FROM 1975 TO 2012. THEIR REPORT SHOWS THE DATA COLLECTION CAMPAIGNS OCCURRED IN A DIFFERENT SEASON FOR A DIFFERENT AREA IN EACH OF THE FIVE REGIONS, THEREFORE, THERE IS A SIGNIFICANT DATA GAP TO UNDERSTAND HOW GROUNDWATER RESPONDS TO THE RAINFALL PATTERN AND HOW MUCH AND WHEN RECHARGED GROUNDWATER WOULD BE STORED AND AVAILABLE FOR LOCAL END USERS.